CN101512373A - Error factor identification device, method, program, recording medium, output correction device having the device, and reflection coefficient measuring device - Google Patents

Error factor identification device, method, program, recording medium, output correction device having the device, and reflection coefficient measuring device Download PDF

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Publication number
CN101512373A
CN101512373A CNA200780032504XA CN200780032504A CN101512373A CN 101512373 A CN101512373 A CN 101512373A CN A200780032504X A CNA200780032504X A CN A200780032504XA CN 200780032504 A CN200780032504 A CN 200780032504A CN 101512373 A CN101512373 A CN 101512373A
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error factor
signal
lead
reflection coefficient
out terminal
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CN101512373B (en
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中山喜和
春田将人
关根浩幸
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Advantest Corp
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Advantest Corp
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/28—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass

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  • Measurement Of Resistance Or Impedance (AREA)
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Abstract

An error factor identification device (20) includes: an error factor recording unit for recording an error factor (Eija) in a signal generation system (100) having a signal generation unit (12) for generating a signal and an output terminal (19a) for outputting a signal; a reflection coefficient derivation unit (24) for deriving a reflection coefficient of the output terminal (19a) according to signal measurement results (R1, R2) in the state when a signal is outputted from the output terminal (19a) and the error factor (Eija) recorded in the error factor recording unit; and a true/false judging unit for judging true/false of the recorded error factor (Eija).

Description

Be used for equipment, method, program and recording medium that error factor is determined, and be provided with the output calibration equipment and the measurement of reflection-factor equipment of this equipment
Technical field
The present invention relates to switch-branch signal source that the combined structure of switch of signal that signal source by will generating signal and arbitrary port output in a plurality of ports are generated forms calibrates.
Background technology
Traditionally, the existing circuit parameter (such as the S parameter) (with reference to patent documentation 1: for example Japanese Laid-Open Patent Publication No.H11-38054) that records of test component (DUT).
Particularly, signal is transferred into receiving element via DUT from signal source.Signal is received the unit and receives.The S parameter and the frequency characteristic that obtain DUT by the received signal of measurement receiving element are possible.
In this case, owing in measurement, produce the measuring system error such as the mismatch between the measuring systems such as signal source and DUT.These measuring system errors comprise Ed---by the caused error of bridge circuit direction, and Er---because the caused error of frequency-tracking; And Es---because the caused error of source mismatch.
In this case, can correction error according to for example patent documentation 1.The correction of this mode is called as calibration.To provide the simple description of this calibration now.Calibrating device is connected to signal source to realize three types state: open circuit, short circuit and load (standard termination Z0).In these states, obtained to obtain the S parameter corresponding three types by bridge circuit with three types state from the signal of each calibrating device reflected back.From variable Ed, Er and the Es of three types of this S parameter acquiring of three types, and subsequently it is proofreaied and correct.
It should be noted that Er is represented as the product of the error E r1 relevant with signal input and the error E r2 relevant with signal reflex.In this case, power meter can be connected to signal source, thus measuring error Er1 and Er2 (with reference to patent documentation 2: for example WO 2004/049564 text) to measure power.
Above-mentioned calibration can be applied to the switch branch signal source.Should be noted that the switch branch signal source is the combination of the switch of the signal source of generation signal and the signal that the output of the arbitrary port in a plurality of ports is generated.If above calibration is applied to the switch branch signal source, then will realizes comprising three kinds of states of open-circuit condition, off state and load condition (adopting standard termination Z0), and also will connect power meter as required corresponding a plurality of ports.
All to measure when in this case, measuring the circuit parameter of DUT at every turn Ed, Er1, Er2, and Es be comparatively loaded down with trivial details.Therefore, wish to be recorded in Ed, Er1 that particular moment records, Er2, and Es, and when each metering circuit parameter, use the Ed, the Er1 that are write down, Er2, and Es proofread and correct the circuit parameter of DUT.
Yet, measure Ed, Er1, Er2, and the time point of the time point of Es and the circuit parameter of measurement DUT between the long-term change or the fault of measuring system may appear.The long-term change of measuring system or fault may cause Ed, Er1, Er2, and Es after measured, change.Under this situation, use Ed, the Er1 write down, Er2, and Es to proofread and correct can not be accurate correction.
When measuring the circuit parameter of DUT, can determine Ed, Er1, Er2, and Es whether change because they by actual measurement Ed, Er1, Er2, and Es carried out measurement.Yet, so just can not avoid actual measurement Ed, Er1, Er2, and the problem of Es.
The objective of the invention is easily to implement calibration to such as signal generating systems such as switch branch signal sources.
Disclosure of the Invention
According to the present invention, a kind of error factor determines that equipment comprises: error factor record cell, the error factor in the tracer signal generation systems, this signal generating system comprise the lead-out terminal that is used to generate the signal generating unit of signal and is used for output signal; The reflection coefficient derivation unit is based on when the signal measurement result of signal and be recorded in the derive reflection coefficient of lead-out terminal of error factor the error factor record cell when lead-out terminal is exported just; And true/false determining unit, based on derive reflection coefficient, and the true value of reflection coefficient determine the error factor that write down for true still for false.
Error factor according to structure like this is determined equipment, and the error factor in the error factor recording unit records signal generating system, this signal generating system comprise the lead-out terminal that is used to generate the signal generating unit of signal and is used for output signal.The reflection coefficient derivation unit is based on when the signal measurement result of signal and be recorded in the derive reflection coefficient of lead-out terminal of error factor the error factor record cell when lead-out terminal is exported just.Very/false determining unit based on derive reflection coefficient, and the true value of reflection coefficient determine the error factor that write down for true still for false.
According to the present invention, a kind of error factor determines that equipment comprises: error factor record cell, the error factor in the tracer signal generation systems, this signal generating system comprise a plurality of lead-out terminals that are used to generate the signal generating unit of signal and are used for output signal; The reflection coefficient derivation unit is based on when the signal measurement result of signal and be recorded in derive each reflection coefficient of a plurality of lead-out terminals of error factor the error factor record cell when lead-out terminal is exported just; And true/false determining unit, based on derive reflection coefficient whether consistent each other determine the error factor that write down for true still for false, wherein the measurement result of signal is in acquisition during unanimity each other of each reflection coefficients of a plurality of lead-out terminals.
Error factor according to structure like this is determined equipment, and the error factor in the error factor recording unit records signal generating system, this signal generating system comprise a plurality of lead-out terminals that are used to generate the signal generating unit of signal and are used for output signal.The reflection coefficient derivation unit is based on when the signal measurement result of signal and be recorded in derive each reflection coefficient of a plurality of lead-out terminals of error factor the error factor record cell when lead-out terminal is exported just.Very/whether the consistent error factor of determining to be write down is for very still being vacation each other based on the derivation reflection coefficient for false determining unit.The measurement result of signal is to obtain when each reflection coefficient of a plurality of lead-out terminals is consistent each other.
According to the present invention, a kind of error factor determines that equipment comprises: the error factor record cell, error factor in the tracer signal generation systems, this signal generating system comprise the single lead-out terminal that is used to generate a plurality of signal generating units of signal and is used for output signal; The reflection coefficient derivation unit is based on when the signal measurement result of signal and be recorded in the derive reflection coefficient of respectively corresponding these a plurality of signal generating units of lead-out terminal of error factor the error factor record cell when lead-out terminal is exported just; And true/false determining unit, whether the consistent error factor of determining to be write down is for very still being vacation each other based on the derivation reflection coefficient.
Error factor according to structure like this is determined equipment, and the error factor in the error factor recording unit records signal generating system, this signal generating system comprise the single lead-out terminal that is used to generate a plurality of signal generating units of signal and is used for output signal.The reflection coefficient derivation unit is based on when the signal measurement result of signal and be recorded in error factor the error factor record cell lead-out terminal reflection coefficient of corresponding a plurality of signal generating units respectively of deriving when lead-out terminal is exported just.Very/whether the consistent error factor of determining to be write down is for very still being vacation each other based on the derivation reflection coefficient for false determining unit.
Error factor according to the present invention is determined equipment, and the measurement result of signal can be included in the measurement result of the reflection of the measurement result of generated error factor front signal and signal.
Error factor according to the present invention is determined equipment, and signal can record when truing tool is connected to lead-out terminal; And truing tool can realize comprising open-circuit condition, short-circuit condition, standard termination state, and the free position of arbitrary load state.
Error factor according to the present invention is determined equipment, and signal generating system can comprise the amplifier that signal is amplified, and this error factor determines that equipment comprises: amplification factor record cell, the amplification factor of record amplifier; The amplification factor derivation unit is based on when the signal just measurement result of signal and the power derivation amplification factor of signal when lead-out terminal is exported; And amplification factor true/false determining unit, based on the amplification factor that is write down and derive amplification factor determine the amplification factor that write down for true still for false.
Error factor according to the present invention is determined equipment, and true/false determining unit can still come suggestion error factor to be measured or report signal generation systems fault for false result for true based on the error factor of determining to be write down.
Error factor according to the present invention is determined equipment, and these a plurality of lead-out terminals can be same types; And signal can record when a plurality of lead-out terminals are in notconnect state.
Error factor according to the present invention is determined equipment, and signal can record when same truing tool is connected to this a plurality of lead-out terminal; And truing tool can realize comprising open-circuit condition, short-circuit condition, standard termination state, and the free position of arbitrary load state.
According to a kind of output calibration equipment of the present invention, can comprise that error factor according to the present invention is determined equipment and based on being defined as the signal power regulon of genuine error factor conditioning signal power by true/false determining unit.
A kind of measurement of reflection-factor equipment according to the present invention can comprise: error factor according to the present invention is determined equipment; And measurement of reflection-factor unit, when test component is connected to lead-out terminal based on the measurement result of the reflection of the measurement result of signal before the generated error factor, signal, and be defined as the reflection coefficient that genuine error factor is measured test component by true/false determining unit.
According to the present invention, a kind of error factor determines that method comprises: error factor recording step, the error factor in the tracer signal generation systems, this signal generating system comprise the lead-out terminal that is used to generate the signal generating unit of signal and is used for output signal; Reflection coefficient derivation step is based on when the signal just measurement result of signal, and the derive reflection coefficient of lead-out terminal of the error factor that writes down the error factor recording step when lead-out terminal is exported; And true/false determining step, based on derive reflection coefficient, and the true value of reflection coefficient determine the error factor that write down for true still for false.
According to the present invention, a kind of error factor determines that method comprises: error factor recording step, the error factor in the tracer signal generation systems, this signal generating system comprise a plurality of lead-out terminals that are used to generate the signal generating unit of signal and are used for output signal; Reflection coefficient derivation step is based on when the signal just measurement result of signal, and derive each reflection coefficient of a plurality of lead-out terminals of the error factor that writes down the error factor recording step when lead-out terminal is exported; And true/false determining step, based on derive reflection coefficient whether consistent each other determine the error factor that write down for true still for false, wherein the measurement result of signal is in acquisition during unanimity each other of each reflection coefficients of a plurality of lead-out terminals.
According to the present invention, a kind of error factor determines that method comprises: the error factor recording step, error factor in the tracer signal generation systems, this signal generating system comprise the single lead-out terminal that is used to generate a plurality of signal generating units of signal and is used for output signal; Reflection coefficient derivation step is based on when the signal just measurement result of signal, and the derive reflection coefficient of respectively corresponding these a plurality of signal generating units of lead-out terminal of the error factor that writes down the error factor recording step when lead-out terminal is exported; And true/false determining step, whether the consistent error factor of determining to be write down is for very still being vacation each other based on the derivation reflection coefficient.
The present invention is a kind of by the instruction repertorie of computing machine execution with enforcement error factor deterministic process, comprise: the error factor recording step, error factor in the tracer signal generation systems, this signal generating system comprise the lead-out terminal that is used to generate the signal generating unit of signal and is used for output signal; Reflection coefficient derivation step is based on when the signal just measurement result of signal, and the derive reflection coefficient of lead-out terminal of the error factor that writes down the error factor recording step when lead-out terminal is exported; And true/false determining step, based on derive reflection coefficient, and the true value of reflection coefficient determine the error factor that write down for true still for false.
The present invention is a kind of by the instruction repertorie of computing machine execution with enforcement error factor deterministic process, comprise: the error factor recording step, error factor in the tracer signal generation systems, this signal generating system comprise a plurality of lead-out terminals that are used to generate the signal generating unit of signal and are used for output signal; Reflection coefficient derivation step is based on when the signal just measurement result of signal, and derive each reflection coefficient of a plurality of lead-out terminals of the error factor that writes down the error factor recording step when lead-out terminal is exported; And true/false determining step, based on derive reflection coefficient whether consistent each other determine the error factor that write down for true still for false, wherein the measurement result of signal is in acquisition during unanimity each other of each reflection coefficients of this a plurality of lead-out terminals.
The present invention is a kind of by the instruction repertorie of computing machine execution with enforcement error factor deterministic process, comprise: the error factor recording step, error factor in the tracer signal generation systems, this signal generating system comprise the single lead-out terminal that is used to generate a plurality of signal generating units of signal and is used for output signal; Reflection coefficient derivation step is based on when the signal just measurement result of signal, and the derive reflection coefficient of respectively corresponding these a plurality of signal generating units of lead-out terminal of the error factor that writes down the error factor recording step when lead-out terminal is exported; And true/false determining step, whether the consistent error factor of determining to be write down is for very still being vacation each other based on the derivation reflection coefficient.
The present invention be a kind of have by computing machine carry out computer-readable medium with the instruction repertorie of implementing the error factor deterministic process, comprise: the error factor recording step, error factor in the tracer signal generation systems, this signal generating system comprise the lead-out terminal that is used to generate the signal generating unit of signal and is used for output signal; Reflection coefficient derivation step is based on when the signal just measurement result of signal, and the derive reflection coefficient of lead-out terminal of the error factor that writes down the error factor recording step when lead-out terminal is exported; And true/false determining step, based on derive reflection coefficient, and the true value of reflection coefficient determine the error factor that write down for true still for false.
The present invention be a kind of have by computing machine carry out computer-readable medium with the instruction repertorie of implementing the error factor deterministic process, comprise: the error factor recording step, error factor in the tracer signal generation systems, this signal generating system comprise a plurality of lead-out terminals that are used to generate the signal generating unit of signal and are used for output signal; Reflection coefficient derivation step is based on when the signal just measurement result of signal, and derive each reflection coefficient of a plurality of lead-out terminals of the error factor that writes down the error factor recording step when lead-out terminal is exported; And true/false determining step, based on derive reflection coefficient whether consistent each other determine the error factor that write down for true still for false, wherein the measurement result of signal is in acquisition during unanimity each other of each reflection coefficients of a plurality of lead-out terminals.
The present invention be a kind of have by computing machine carry out computer-readable medium with the instruction repertorie of implementing the error factor deterministic process, comprise: the error factor recording step, error factor in the tracer signal generation systems, this signal generating system comprise the single lead-out terminal that is used to generate a plurality of signal generating units of signal and is used for output signal; Reflection coefficient derivation step is based on when the signal just measurement result of signal, and the derive reflection coefficient of respectively corresponding these a plurality of signal generating units of lead-out terminal of the error factor that writes down the error factor recording step when lead-out terminal is exported; And true/false determining step, whether the consistent error factor of determining to be write down is for very still being vacation each other based on the derivation reflection coefficient.
The accompanying drawing summary
Fig. 1 shows the configuration according to the signal generating system 100 of first embodiment;
Fig. 2 is the signal flow diagram according to the signal generating system 100 of first embodiment;
Fig. 3 shows the functional block diagram of determining the configuration of equipment 20 according to the error factor of first embodiment;
Fig. 4 shows wherein, and truing tool 62 is connected to the state that lead-out terminal 19a and frequency mixer 16a and 16b are connected to terminal 21a and 21b respectively;
Fig. 5 is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Fig. 4;
Fig. 6 shows the diagrammatic sketch according to the configuration of the switch branch signal source 10 of second embodiment;
Fig. 7 is the signal flow diagram according to the switch branch signal source 10 of second embodiment;
Fig. 8 shows the functional block diagram of determining the configuration of equipment 20 according to the error factor of second embodiment;
Fig. 9 shows wherein, and truing tool 62 is connected to the state that lead-out terminal 19a and frequency mixer 16a and 16b are connected to terminal 21a and 21b respectively;
Figure 10 shows wherein, and truing tool 62 is connected to the state that lead-out terminal 19b and frequency mixer 16a and 16b are connected to terminal 21a and 21b respectively;
Figure 11 shows wherein, and truing tool 62 is connected to the state that lead-out terminal 19c and frequency mixer 16a and 16b are connected to terminal 21a and 21b respectively;
Figure 12 shows wherein, and truing tool 62 is connected to the state that lead-out terminal 19d and frequency mixer 16a and 16b are connected to terminal 21a and 21b respectively;
Figure 13 (a) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Fig. 9, Figure 13 (b) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Figure 10, Figure 13 (c) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Figure 11, and Figure 13 (d) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Figure 12;
Figure 14 shows the configuration according to the signal generating system 100 of the 3rd embodiment;
Figure 15 is the signal flow diagram according to the signal generating system 100 of the 3rd embodiment;
Figure 16 shows the functional block diagram of determining the configuration of equipment 20 according to the error factor of the 3rd embodiment;
Figure 17 shows wherein that truing tool 62 is connected to lead-out terminal 19a, frequency mixer 16a and 16b is connected to the state that terminal 21a and 21b and signal generating unit 12a are connected to amplifier 13 respectively;
Figure 18 shows wherein that truing tool 62 is connected to lead-out terminal 19a, frequency mixer 16a and 16b is connected to the state that terminal 21a and 21b and signal generating unit 12b are connected to amplifier 13 respectively;
Figure 19 (a) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Figure 17, and Figure 19 (b) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Figure 18;
Figure 20 shows the example of the configuration of output calibration equipment 1 when error factor determines that equipment 20 is used as output calibration equipment 1;
Figure 21 shows the example of the configuration of measurement of reflection-factor equipment 2 when error factor determines that equipment 20 is applied to measurement of reflection-factor equipment 2;
Figure 22 shows the process flow diagram of determining the operation of equipment 20 according to the error factor of first embodiment;
Figure 23 shows the process flow diagram of operation of determining true/false determining unit 28 of equipment 20 according to the error factor of first embodiment;
Figure 24 shows the process flow diagram of determining the operation of equipment 20 according to the error factor of second embodiment;
Figure 25 shows the process flow diagram of operation of determining true/false determining unit 28 of equipment 20 according to the error factor of second embodiment;
Figure 26 shows the process flow diagram of determining the operation of equipment 20 according to the error factor of the 3rd embodiment; And
Figure 27 shows the process flow diagram of operation of determining true/false determining unit 28 of equipment 20 according to the error factor of the 3rd embodiment.
Implement optimal mode of the present invention
Description now with reference to accompanying drawing contact embodiments of the invention.
First embodiment
Fig. 1 shows the configuration according to the signal generating system 100 of first embodiment.Signal generating system 100 comprises signal generating unit 12, amplifier 13, bridge circuit 14a and 14b, frequency mixer 16a and 16b and lead-out terminal 19a.
Signal generating unit 12 generates signal (such as high-frequency signal).Amplifier 13 amplifies the signal that signal generating unit 12 generates.
The output of bridge circuit 14a reception amplifier 13, and output branched into both direction.Frequency mixer 16a receives one of output of bridge circuit 14a, and multiplies each other with it with the local signal with predetermined local frequency.It should be noted that local signal and not shown.The output of frequency mixer 16a can be considered in signal generating system 100 measurement result that produces signal before the error factor.
Bridge circuit 14b receive in the bridge circuit 14a output another output and with its direct output.It should be noted that bridge circuit 14b receives the signal reflex (reflected signal) from outgoing side, and this reflected signal is offered frequency mixer 16b.Frequency mixer 16b multiplies each other reflected signal and local signal.It should be noted that local signal and not shown.The output of frequency mixer 16b can be considered the measurement result of reflected signal.Because reflected signal is the reflection from the signal of outgoing side, so the measurement result of reflected signal also can be considered the measurement result of this signal.
Signal is output from lead-out terminal 19a.Under this situation, indicate with a1, and the S parameter of reflection of returning the output of lead-out terminal 19a indicates with b1 from the S parameter of the output of lead-out terminal 19a.
Fig. 2 is the signal flow diagram according to the signal generating system 100 of first embodiment.
In Fig. 2, the output of SG beacon signal generating unit 12, R1 indicates the output of frequency mixer 16a, and R2 indicates the output of frequency mixer 16b.In addition, below relation is set up: R1=SG * L, as shown in Figure 2, wherein L (S parameter) is the amplification factor of amplifier 13.
With reference to Fig. 2, observe and in signal generating system 100, generated error factor E11a, E12a, E21a and E22a (S parameter).
Fig. 3 shows the functional block diagram of determining the configuration of equipment 20 according to the error factor of first embodiment.Error factor determine equipment 20 comprise terminal 21a and 21b, error factor record cell 22, amplification factor derivation unit 23, reflection coefficient derivation unit 24, amplification factor record cell 25, true value input block 26, true/false determining unit 28 and amplification factor true/false determining unit 29.
Terminal 21a is the terminal that is connected to the frequency mixer 16a of signal generating system 100.Terminal 21b is the terminal that is connected to the frequency mixer 16b of signal generating system 100.
Error factor E11a, the E12a of error factor record cell 22 tracer signal generation systems 100, E21a, and E22a.Under this situation, error factor E11a, E12a, E21a, and E22a indicate by Eija (i=1 or 2, j=1 or 2).
Amplification factor derivation unit 23 based on signal just when lead-out terminal 19a exports the measurement result R1 of signal and the power SG of signal amplification factor L is derived as L=R1/SG.The value that it should be noted that the power SG of signal determines that from error factor the outside of equipment 20 is fed to amplification factor derivation unit 23.In addition, the measurement result R1 of signal is fed to amplification factor derivation unit 23 via terminal 21a.
The amplification factor of amplification factor record cell 25 record amplifiers 13.
The true value Xt of the reflection coefficient of true value input block 26 input and output terminal 19a.The true value Xt of reflection coefficient that it should be noted that lead-out terminal 19a is known before measuring-signal.
Very/the error factor Eiia that the reflection coefficient Xm that false determining unit 28 is derived based on reflection coefficient derivation unit 24 and the true value Xt of reflecting system determine in the error factor record cell 22 to be write down for true still for false.Tool is special, if Xm is consistent each other with Xt, then true/false determining unit 28 determines that error factor Eija is true.Very/and false determining unit 28 is in case to determine error factor Eija be false, with regard to advising error factor Eija measured or the failure of report signal generation systems 100.For example, even true/false determining unit 28 determines that error factor Eija is false, but the difference between Xm and the Xt is in preset range, and then true/false determining unit 28 determines that this is because the secular variation of signal generating system 100 is caused, and suggestion is measured error factor Eija.For example, if true/false determining unit 28 determines that error factor Eija be false, and the difference between Xm and the Xt surpasses preset range, and then true/false determining unit 28 determines that these are because the fault of signal generating system 100 is caused, and so reports.
It should be noted that the consistent each other situation of Xm and Xt wherein means the situation of Xm=Xt.Yet even Xm=Xt is false, but the difference between Xm and the Xt thinks that Xm is consistent each other with Xt in the scope of being permitted.
Amplification factor is true/false determining unit 29 based on the amplification factor of record in the amplification factor record cell 25 and amplification factor that amplification factor derivation unit 23 is derived determine the amplification factor that write down for true still for false.If the amplification factor that is write down and the amplification factor of deriving consistent each other (being equal to each other), then amplification factor true/amplification factor that false determining unit 29 is determined to be recorded in the amplification factor record cell 25 is very.Amplification factor is true/false determining unit 29 in case the amplification factor of determining to be write down for false, just advise the amplification factor that is write down is measured or the failure of report signal generation systems 100.For example, even amplification factor is true/and amplification factors that false determining unit 29 is determined to be write down are for false, but if difference between the two is in preset range, then amplification factor true/false determining unit 29 determines that these are because the secular variation of signal generating system 100 is caused, and suggestion is measured (may advise that maybe the amplification factor that will derive is recorded in the amplification factor record cell 25) to amplification factor.In addition, for example, if amplification factor true/amplification factors that false determining unit 29 is determined to be write down are for false, and their difference between the two surpasses preset range, then amplification factor true/false determining unit 29 determines that these are because the fault of signal generating system 100 is caused, and so report.
Even the amplification factor that is write down is not equal to the amplification factor of deriving, but if their difference between the two in the scope of being permitted, just thinks that the amplification factor that is write down is consistent each other with the amplification factor of deriving.
Reflection coefficient derivation unit 24 is at signal measurement result R1 and R2 via terminal 21a and 21b received signal under the state of the lead-out terminal 19a of signal generating system 100 output.
With reference to Fig. 4, the simple description what measurement result terminal 21a and 21b receive will be provided.With reference to Fig. 4, when signal from lead-out terminal 19a output and truing tool 62 (open circuit, short circuit, standard termination or arbitrary load) when being connected to lead-out terminal 19a, terminal 21a and 21b be the measurement result of the measurement result of received signal (before generated error factor Eija) and reflected signal (signal that is reflected by truing tool 62) respectively.Although truing tool 62 is connected to lead-out terminal 19a in the example depicted in fig. 4, can be free of attachment to lead-out terminal 19a (notconnect state) whatever.Therefore notconnect state more preferably realizes notconnect state than the easier realization of situation that connects truing tool 62.It should be noted that the caused phase change of reflection is zero under notconnect state.
In addition, truing tool 62 (short circuit) is realized short-circuit condition (reflection coefficient 1: total reflection).Under this situation, reflecting caused phase change is 180 degree.Truing tool 62 (standard termination) expression truing tool 62 has realizes that reflection coefficient is the standard termination of zero state.Truing tool 62 (arbitrary load) expression truing tool 62 has the load that can not mate its impedance.
In addition, reflection coefficient derivation unit 24 is based on the measurement result R1 and the R2 of signal and be recorded in the reflection coefficient Xm that error factor Eija in the error factor record cell 22 derives lead-out terminal 19a.
Provide the description of the operation of first embodiment now with reference to the process flow diagram in Figure 22 and 23.Figure 22 shows the process flow diagram of determining the operation of equipment 20 according to the error factor of first embodiment.Figure 23 shows the process flow diagram of operation of determining true/false determining unit 28 of equipment 20 according to the error factor of first embodiment.
At first, truing tool 62 is attached to the lead-out terminal 19a (S10) of signal generating system 100.In addition, the frequency mixer 16a of signal generating system 100 is connected to the terminal 21a that error factor is determined equipment 20, and the frequency mixer 16b of signal generating system 100 is connected to the terminal 21b that error factor is determined equipment 20.
Fig. 4 shows wherein, and truing tool 62 is connected to the state that lead-out terminal 19a and frequency mixer 16a and 16b are connected to terminal 21a and 21b respectively.It should be noted that error factor determine the terminal 21a of equipment 20 and 21b, and reflection coefficient derivation unit 24 outside other assemblies not shown in Figure 4.R1 is the measurement result of signal before generated error factor Eija.R2 is the measurement result of reflected signal.R1 and R2 are the measurement results of signal.
It should be noted that reflected signal is signal (a1) also is calibrated instrument 62 reflections subsequently from lead-out terminal 19a output a consequential signal (b1).In addition, the signal (b1) that is calibrated instrument 62 reflection is fed to bridge circuit 14b.The reflected signal that is fed to bridge circuit 14b is fed to frequency mixer 16b, and multiplies each other with local signal.Frequency mixer 16b is output as R2.
In addition, the signal before generated error factor Eija is fed to bridge circuit 14a.The signal that is fed to bridge circuit 14a is fed to frequency mixer 16a, and multiplies each other with local signal.Frequency mixer 16a is output as R1.
Like this, record R1 and R2 (S12).
The output R1 and the R2 that record are fed to reflection coefficient derivation unit 24.
Fig. 5 is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Fig. 4.In Fig. 5, following equation (1) is set up:
R2/R1＝E11a+(E21a·E12a·X)/(1-E22a·X) (1)
It should be noted that X indicates the load factor of truing tool 62.Truing tool 62 is the known tool that realize following state: open circuit, short circuit, standard termination Z0 and arbitrary load (with reference to patent documentation 1).
Following equation (2) is resulting by equation (1) being found the solution X.
X＝1/(E22a+((E21a·E12a)/(R2/R1-E11a)) (2)
Reflection coefficient derivation unit 24 composes the measurement result R1 and the R2 of signal to equation (2).In addition, the error factor Eija of reflection coefficient derivation unit 24 reading and recording in error factor record cell 22, and the error factor Eija that reads composed to equation (2).As a result, reflection coefficient derivation unit 24 is derived the load factor of truing tool 62, i.e. the reflection coefficient X (S14) of lead-out terminal 19a.
The reflection coefficient X that derives is Xm, as mentioned above.Therefore, the reflection coefficient Xm of derivation is guessed for consistent with the true value Xt of reflection coefficient X.If Xm and Xt are inconsistent each other, think that then error factor Eija is for false.In other words, the error factor Eija that is recorded in the error factor record cell 22 is inconsistent with the error factor Eija of signal generating system 100 when measuring-signal.Think that then this phenomenon is because for example the secular variation or the fault of signal generating system 100 are caused.
The reflection coefficient Xm that derives is fed to very/false determining unit 28.In addition, the true value Xt of the reflection coefficient X of lead-out terminal 19a is fed to very/false determining unit 28 via true value input block 26.Very/false determining unit 28 is the reflection coefficient Xm and the true value Xt (S16) compared to each other that derive.
Provide very/description of the operation of false determining unit 28 now with reference to the process flow diagram among Figure 23.
Very/true value Xt that false determining unit 28 is determined the reflection coefficient Xm that derives and reflection coefficient whether consistent (S160) each other.If Xm consistent each other with Xt (be "Yes" among the step S160), then to determine to be recorded in the error factor Eija in the error factor record cell 22 be very (S161) to true/false determining unit 28.
If Xm not consistent each other with Xt (be "No" among the step S160), then to determine to be recorded in the error factor Eija in the error factor record cell 22 be vacation (S162) to true/false determining unit 28.
Under this situation, even Xm is not consistent each other with Xt, but the difference between Xm and the Xt is (being "Yes" among the step S164) in preset range, then true/false determining unit 28 determines that this difference is caused by the secular variation of signal generating system 100, and suggestion is measured (S166) to error factor Eija.For example, true/false determining unit 28 causes error factor to determine that the display (not shown) of equipment 20 shows the message (for example, " calibrating signal generation systems ") that suggestion is measured error factor Eija.
If Xm is not consistent each other with Xt, and the difference between Xm and the Xt (being "No" among the step S164) not in preset range, then true/false determining unit 28 is determined signal generating system 100 fault, and so report (S168).For example, true/false determining unit 28 causes error factor to determine the display (not shown) display message of equipment 20 (for example, " signal generating system is fault ").
To provide now the amplification factor of determining to be recorded in the amplifier 13 in the amplification factor record cell 25 is true or is the description of definite operation of vacation.
Carry out attached (S10) of truing tool 62 as described above, the measurement of R1 and R2 (S12).Then, the power SG of signal is fed to amplification factor derivation unit 23 with the R1 that records.Amplification factor derivation unit 23 is derived as amplification factor: L=R1/SG.Then, amplification factor true/false determining unit 29 based on the amplification factor of record in the amplification factor record cell 25 and amplification factor that amplification factor derivation unit 23 is derived determine the amplification factor that write down for true still for false.
According to first embodiment, can by (reflection coefficient that should note lead-out terminal 19a in notconnect state is known) measure R 1 and R2 when the known truing tool 62 of its reflection coefficient is connected to lead-out terminal 19a or when being free of attachment to lead-out terminal 19a (notconnect state) whatever determine to be recorded in error factor Eija in the error factor record cell 22 for true still for false.
In other words, because the error factor Eija that can determine to be recorded in the error factor record cell 22 is true still for false, need not but to be that lead-out terminal 19a go up to realize under open circuit, three states of short circuit and load (standard termination Z0) measuring error factor Eija and is connected power meter, thus determine error factor Eija for be very or for vacation very easy.
If determining error factor Eija be very, then be recorded in the error factor that error factor Eija in the error factor record cell 22 can be used as signal generating system 100.Owing to need not measuring error factor Eija, can reduce the required work of calibration.
In addition, be false if determine error factor Eija, error factor that then must measuring-signal generation systems 100.Yet, because the measuring error factor when need not at every turn to measure the circuit parameter of test component, so can reduce the required work of calibration.
Second embodiment
Second embodiment relates to signal source 110 wherein is connected to the switch branch signal source (signal generating system) 10 of a plurality of lead-out terminal 19a, 19b, 19c and 19d via switch 18 embodiment.It should be noted that the reflection coefficient that before the signal among second embodiment is measured, need not to know on corresponding a plurality of lead-out terminal 19a, 19b, 19c and the 19d.Yet the reflection coefficient on corresponding a plurality of lead-out terminal 19a, 19b, 19c and the 19d must be consistent each other (value of reflection coefficient equates).
In following chapters and sections, same components uses the Reference numeral identical with first embodiment to indicate, and does not do detailed explanation.
Fig. 6 shows the diagrammatic sketch according to the configuration of the switch branch signal source 10 of second embodiment.Switch branch signal source 10 comprises signal source 110, switch 18 and lead-out terminal 19a, 19b, 19c and 19d.
Signal source 110 is in order to generate signal.Signal source 110 comprises signal generating unit 12, amplifier 13, bridge circuit 14a and 14b and frequency mixer 16a and 16b.Signal generating unit 12, amplifier 13, bridge circuit 14a and 14b and frequency mixer 16a and 16b are identical with among first embodiment those, so omit its description.
Switch 18 is connected to signal source 110, and any one output signal from a plurality of lead-out terminal 19a, 19b, 19c and 19d.
Among lead-out terminal 19a, 19b, 19c and the 19d any one is connected to signal source 110 by switch 18.Subsequently, be connected to the lead-out terminal output signal of signal source 110.
Under this situation, if signal is from lead-out terminal 19a output, then the S parameter from the output of lead-out terminal 19a is a1, and the S parameter that reflects back into the output of lead-out terminal 19a is b1.
If signal is from lead-out terminal 19b output, then the S parameter from the output of lead-out terminal 19b is a2, and the S parameter that reflects back into the output of lead-out terminal 19b is b2.
If signal is from lead-out terminal 19c output, then the S parameter from the output of lead-out terminal 19c is a3, and the S parameter that reflects back into the output of lead-out terminal 19c is b3.
If signal is from lead-out terminal 19d output, then the S parameter from the output of lead-out terminal 19d is a4, and emission to get back to the S parameter of the output of lead-out terminal 19d be b4.
Fig. 7 (a) is a signal flow diagram according to the switch branch signal source 10 of second embodiment to 7 (d).Fig. 7 (a) is the signal flow diagram when signal source 110 is connected to lead-out terminal 19a.Fig. 7 (b) is the signal flow diagram when signal source 110 is connected to lead-out terminal 19b.Fig. 7 (c) is the signal flow diagram when signal source 110 is connected to lead-out terminal 19c.Fig. 7 (d) is the signal flow diagram when signal source 110 is connected to lead-out terminal 19d.
At Fig. 7 (a) in 7 (d), the output of SG beacon signal generating unit 12, R1 indicates the output of frequency mixer 16a, and R2 indicates the output of frequency mixer 16b.In addition, below relation is set up: R1=SG * L, as shown in Figure 7, wherein L (S parameter) is the amplification factor of amplifier 13.
With reference to Fig. 7 (a), observe if signal source 110 is connected to lead-out terminal 19a, then generated error factor E11a, E12a, E21a, and E22a (S parameter).Error factor E11a, E12a, E21a, and E22a be called as the first port error factor.
With reference to Fig. 7 (b), observe if signal source 110 is connected to lead-out terminal 19b, then generated error factor E11b, E12b, E21b, and E22b (S parameter).Error factor E11b, E12b, E21b, and E22b be called as the second port error factor.
With reference to Fig. 7 (c), observe if signal source 110 is connected to lead-out terminal 19c, then generated error factor E11c, E12c, E21c, and E22c (S parameter).Error factor E11c, E12c, E21c, and E22c be called as the 3rd port error factor.
With reference to Fig. 7 (d), observe if signal source 110 is connected to lead-out terminal 19d, then generated error factor E11d, E12d, E21d, and E22d (S parameter).Error factor E11d, E12d, E21d, and E22d be called as the 4th port error factor.
Fig. 8 shows the functional block diagram of determining the configuration of equipment 20 according to the error factor of second embodiment, error factor determine equipment 20 comprise terminal 21a and 21b, error factor record cell 22, amplification factor derivation unit 23, reflection coefficient derivation unit 24, amplification factor record cell 25, true/false determining unit 28 and amplification factor true/false determining unit 29.
Terminal 21a and 21b, amplification factor derivation unit 23, amplification factor record cell 25, and amplification factor true/false determining unit 29 is identical with among first embodiment those, so omit its description.
The error factor record cell 22 records first port error factor Eija, the second port error factor Eijb, the 3rd port error factor Eijc and the 4th port error factor Eijd, they are error factors of switch branch signal source (signal generating system) 10.
Reflection coefficient derivation unit 24 is based on as the measurement result R1 and the R2 of signal signal during just respectively from lead-out terminal 19a, 19b, 19c and 19d output and be recorded in error factor Eija, Eijb the error factor record cell 22, Eijc, and Eijd derive corresponding reflection coefficient Xam, Xbm, Xcm, and the Xdm of lead-out terminal 19a, 19b, 19c and 19d.The measurement result R1 that it should be noted that signal is to obtain when the corresponding reflection coefficient of a plurality of lead-out terminal 19a, 19b, 19c and 19d is consistent each other with R2.
Particularly, reflection coefficient derivation unit 24 is based on as signal just the measurement result R1 and the R2 of signal and be recorded in the reflection coefficient Xam (with reference to Fig. 9) that error factor Eija the error factor record cell 22 derives lead-out terminal 19a when lead-out terminal 19a exports.
Reflection coefficient derivation unit 24 is based on as signal just the measurement result R1 and the R2 of signal and be recorded in the reflection coefficient Xbm (with reference to Figure 10) that error factor Eijb the error factor record cell 22 derives lead-out terminal 19b when lead-out terminal 19b exports.
Reflection coefficient derivation unit 24 is based on as signal just the measurement result R1 and the R2 of signal and be recorded in the reflection coefficient Xcm (with reference to Figure 11) that error factor Eijc the error factor record cell 22 derives lead-out terminal 19c when lead-out terminal 19c exports.
Reflection coefficient derivation unit 24 is based on as signal just the measurement result R1 and the R2 of signal and be recorded in the reflection coefficient Xdm (with reference to Figure 12) that error factor Eijd the error factor record cell 22 derives lead-out terminal 19d when lead-out terminal 19d exports.
With reference to Fig. 9,10,11 and 12, identical truing tool 62 is connected to corresponding a plurality of lead-out terminal 19a, 19b, 19c and 19d.Therefore, can realize these a plurality of lead-out terminal 19a wherein, 19b, 19c, and the consistent each other state of corresponding reflection coefficient of 19d.In among truing tool 62 and first embodiment those are identical, and therefore the descriptions thereof are omitted.
In addition, if these a plurality of lead-out terminal 19a, 19b, 19c and 19d are same type, then can be in the consistent each other state of corresponding reflection coefficient that notconnect state is realized wherein a plurality of lead-out terminal 19a, 19b, 19c and 19d by making a plurality of lead-out terminal 19a, 19b, 19c and 19d.It should be noted that the state that wherein a plurality of lead-out terminal 19a, 19b, 19c and 19d have a same type means that these terminals have identical reflection coefficient.
It should be noted that Figure 13 (a) shows error factor to 13 (d) and determines that equipment 20 is in the signal flow diagram under the state shown in Fig. 9,10,11 and 12 respectively.
Very/false determining unit 28 based on the reflection coefficient Xam, the Xbm that derive by reflection coefficient derivation unit 24, Xcm, and Xdm whether consistent each other determine to be recorded in error factor Eija, Eijb in the error factor record cell 22, Eijc, and Eijd still be vacation for true.
Tool is special, if Xam, Xbm, Xcm, and Xdm consistent each other, then true/false determining unit 28 determine error factor Eija, Eijb, Eijc, and Eijd be true.Very/false determining unit 28 in case determine error factor Eija, Eijb, Eijc, and Eijd be false, just advise error factor Eija, Eijb, Eijc, reach the failure that Eijd measured or reported switch branch signal source (signal generating system) 10.
For example, even true/false determining unit 28 is determined error factor Eija, Eijb, Eijc, reached Eijd is false, but Xam, Xbm, Xcm, and Xdm between difference in preset range, then true/false determining unit 28 determines that these are because the secular variation of switch branch signal source 10 is caused, and suggestion to error factor Eija, Eijb, Eijc, and Eijd measure.
For example, if true/false determining unit 28 is determined error factor Eija, Eijb, Eijc, reached Eijd is false, and Xam, Xbm, Xcm, the difference that reaches between the Xdm surpass preset range, then true/false determining unit 28 determines that this is because the fault of switch branch signal source 10 is caused, and so report.
Wherein Xam, Xbm, Xcm, and the consistent each other situation of Xdm mean the wherein situation of Xam=Xbm=Xcm=Xdm.Yet, even Xam=Xbm=Xcm=Xdm be false, but Xam, Xbm, Xcm, and Xdm between difference in the scope of being permitted, think Xam, Xbm, Xcm, and Xdm consistent each other.Xam, Xbm, Xcm, the difference that reaches between the Xdm mean Xam, Xbm, Xcm, the maximal value that reaches Xdm and the difference between the minimum value.
Provide the description of the operation of second embodiment now with reference to the process flow diagram in Figure 24 and 25.Figure 24 shows the process flow diagram of determining the operation of equipment 20 according to the error factor of second embodiment.Figure 25 shows the process flow diagram of operation of determining true/false determining unit 28 of equipment 20 according to the error factor of second embodiment.
At first, the lead-out terminal (for example 19a) that truing tool 62 is attached to switch branch signal source 10 (S20).In addition, the frequency mixer 16a of switch branch signal source 10 is connected to the terminal 21a that error factor is determined equipment 20, and the frequency mixer 16b of switch branch signal source 10 is connected to the terminal 21b that error factor is determined equipment 20.In addition, switch 18 is connected to each other signal source 110 together with lead-out terminal 19a.
Fig. 9 shows wherein, and truing tool 62 is connected to the state that lead-out terminal 19a and frequency mixer 16a and 16b are connected to terminal 21a and 21b respectively.It should be noted that error factor determine the terminal 21a of equipment 20 and 21b, and reflection coefficient derivation unit 24 outside other assemblies not shown in Figure 9.R1 is the measurement result of signal before generated error factor Eija.R2 is the measurement result of reflected signal.R1 and R2 are the measurement results of signal.
It should be noted that reflected signal is signal (a1) also is calibrated instrument 62 reflections subsequently from lead-out terminal 19a output a consequential signal (b1).In addition, the signal (b1) that is calibrated instrument 62 reflection is fed to bridge circuit 14b via switch 18.The reflected signal that is fed to bridge circuit 14b is fed to frequency mixer 16b, and multiplies each other with local signal.Frequency mixer 16b is output as R2.
In addition, the signal before generated error factor Eija is fed to bridge circuit 14a.The signal that is fed to bridge circuit 14a is fed to frequency mixer 16a, and multiplies each other with local signal.Frequency mixer 16a is output as R1.
Like this, record R1 and R2 (S22).
The output R1 and the R2 that record are fed to reflection coefficient derivation unit 24.
Figure 13 (a) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Fig. 9; In Figure 13 (a), following formula (1) is set up.It should be noted that X indicates the load factor of truing tool 62.Following formula (2) obtains by formula (1) is found the solution X.
Reflection coefficient derivation unit 24 composes the measurement result R1 and the R2 of signal to equation (2).In addition, the error factor Eija of reflection coefficient derivation unit 24 reading and recording in error factor record cell 22, and the error factor Eija that reads composed to equation (2).As a result, reflection coefficient derivation unit 24 is derived the load factor of truing tool 62, i.e. the reflection coefficient X (S24) of lead-out terminal 19a.
The reflection coefficient X that derives is Xam, as mentioned above.
Then, truing tool 62 is attached to another lead-out terminal (S26), has been attached to all lead-out terminal 19a, 19b, 19c and 19d (being "Yes" among the step S25) until truing tool 62.
For example, truing tool 62 is attached to the lead-out terminal 19b (S26) of switch branch signal source 10.In addition, switch 18 is connected to each other signal source 110 together with lead-out terminal 19b.
Figure 10 shows wherein, and truing tool 62 is connected to the state that lead-out terminal 19b and frequency mixer 16a and 16b are connected to terminal 21a and 21b respectively.It should be noted that error factor determine the terminal 21a of equipment 20 and 21b, and reflection coefficient derivation unit 24 outside other assemblies not shown in Figure 10.R1 is the measurement result of signal before generated error factor Eijb.R2 is the measurement result of reflected signal.R1 and R2 are the measurement results of signal.
It should be noted that reflected signal is signal (a2) also is calibrated instrument 62 reflections subsequently from lead-out terminal 19b output a consequential signal (b2).In addition, the signal (b2) that is calibrated instrument 62 reflection is fed to bridge circuit 14b via switch 18.The reflected signal that is fed to bridge circuit 14b is fed to frequency mixer 16b, and multiplies each other with local signal.Frequency mixer 16b is output as R2.
In addition, the signal before generated error factor Eijb is fed to bridge circuit 14a.The signal that is fed to bridge circuit 14a is fed to frequency mixer 16a, and multiplies each other with local signal.Frequency mixer 16a is output as R1.
Like this, record R1 and R2 (S22).
The output R1 and the R2 that record are fed to reflection coefficient derivation unit 24.
Figure 13 (b) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Figure 10.In Figure 13 (b), following formula (1) is set up.It should be noted that X indicates the load factor of truing tool 62.Following formula (2) obtains by formula (1) is found the solution X.
Reflection coefficient derivation unit 24 composes the measurement result R1 and the R2 of signal to equation (2).In addition, the error factor Eijb of reflection coefficient derivation unit 24 reading and recording in error factor record cell 22, and the error factor Eijb that reads composed to equation (2).As a result, reflection coefficient derivation unit 24 is derived the load factor of truing tool 62, i.e. the reflection coefficient X (S24) of lead-out terminal 19a.
The reflection coefficient X that derives is Xbm, as mentioned above.
In addition, truing tool 62 is attached to the lead-out terminal 19c (S26) of switch branch signal source 10.In addition, switch 18 is connected to each other signal source 110 together with lead-out terminal 19c.
Figure 11 shows wherein, and truing tool 62 is connected to the state that lead-out terminal 19c and frequency mixer 16a and 16b are connected to terminal 21a and 21b respectively.It should be noted that error factor determine the terminal 21a of equipment 20 and 21b, and reflection coefficient derivation unit 24 outside other assemblies not shown in Figure 11.R1 is the measurement result of signal before generated error factor Eijc.R2 is the measurement result of reflected signal.R1 and R2 are the measurement results of signal.
It should be noted that reflected signal is signal (a3) also is calibrated instrument 62 reflections subsequently from lead-out terminal 19c output a consequential signal (b3).In addition, the signal (b3) that is calibrated instrument 62 reflection is fed to bridge circuit 14b via switch 18.The reflected signal that is fed to bridge circuit 14b is fed to frequency mixer 16b, and multiplies each other with local signal.Frequency mixer 16b is output as R2.
In addition, the signal before generated error factor Eijc is fed to bridge circuit 14a.The signal that is fed to bridge circuit 14a is fed to frequency mixer 16a, and multiplies each other with local signal.Frequency mixer 16a is output as R1.
Like this, record R1 and R2 (S22).
The output R1 and the R2 that record are fed to reflection coefficient derivation unit 24.
Figure 13 (c) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Figure 11.In Figure 13 (c), following formula (1) is set up.It should be noted that X indicates the load factor of truing tool 62.Following formula (2) obtains by formula (1) is found the solution X.
Reflection coefficient derivation unit 24 composes the measurement result R1 and the R2 of signal to equation (2).In addition, the error factor Eijc of reflection coefficient derivation unit 24 reading and recording in error factor record cell 22, and the error factor Eijc that reads composed to equation (2).As a result, reflection coefficient derivation unit 24 is derived the load factor of truing tool 62, i.e. the reflection coefficient X (S24) of lead-out terminal 19a.
The reflection coefficient X that derives is Xcm, as mentioned above.
In addition, truing tool 62 is attached to the lead-out terminal 19d (S26) of switch branch signal source 10.In addition, switch 18 is connected to each other signal source 110 together with lead-out terminal 19d.
Figure 12 shows wherein, and truing tool 62 is connected to the state that lead-out terminal 19d and frequency mixer 16a and 16b are connected to terminal 21a and 21b respectively.It should be noted that error factor determine the terminal 21a of equipment 20 and 21b, and reflection coefficient derivation unit 24 outside other assemblies not shown in Figure 12.R1 is the measurement result of signal before generated error factor Eijd.R2 is the measurement result of reflected signal.R1 and R2 are the measurement results of signal.
It should be noted that reflected signal is signal (a4) also is calibrated instrument 62 reflections subsequently from lead-out terminal 19d output a consequential signal (b4).In addition, the signal (b4) that is calibrated instrument 62 reflection is fed to bridge circuit 14b via switch 18.The reflected signal that is fed to bridge circuit 14b is fed to frequency mixer 16b, and multiplies each other with local signal.Frequency mixer 16b is output as R2.
In addition, the signal before generated error factor Eijd is fed to bridge circuit 14a.The signal that is fed to bridge circuit 14a is fed to frequency mixer 16a, and multiplies each other with local signal.Frequency mixer 16a is output as R1.
Like this, record R1 and R2 (S22).
The output R1 and the R2 that record are fed to reflection coefficient derivation unit 24.
Figure 13 (d) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Figure 12.In Figure 13 (d), following formula (1) is set up.It should be noted that X indicates the load factor of truing tool 62.Following formula (2) obtains by formula (1) is found the solution X.
Reflection coefficient derivation unit 24 composes the measurement result R1 and the R2 of signal to equation (2).In addition, the error factor Eijd of reflection coefficient derivation unit 24 reading and recording in error factor record cell 22, and the error factor Eijd that reads composed to equation (2).As a result, reflection coefficient derivation unit 24 is derived the load factor of truing tool 62, i.e. the reflection coefficient X (S24) of lead-out terminal 19a.
The reflection coefficient X that derives is Xdm, as mentioned above.
Like this, if truing tool 62 once was attached to the sub-19a of corresponding output end, 19b, 19c and 19d (among the step S25 for "Yes"), then subsequently by very/false determining unit 28 is the reflection coefficient Xam, the Xbm that derive, Xcm, and Xdm make comparisons each other (S28).
It should be noted that derivation reflection coefficient Xam, Xbm, Xcm, and Xdm be fed to very/false determining unit 28.
The measurement result R1 of signal is to obtain when the corresponding reflection coefficient of a plurality of lead-out terminal 19a, 19b, 19c and 19d is consistent each other with R2.Therefore, reflection coefficient Xam, the Xbm of derivation, Xcm, and Xdm guessed for consistent with the true value Xt of the reflection coefficient of a plurality of lead-out terminal 19a, 19b, 19c and 19d.Therefore, Xam, Xbm, Xcm, and Xdm guessed and be consistent (Xam=Xbm=Xcm=Xdm) each other.
If Xam, Xbm, Xcm, and Xdm inconsistent each other, then can think be recorded in error factor Eija, Eijb in the error factor record cell 22, Eijc, and Eijd for false.In other words, be recorded in error factor Eija, Eijb in the error factor record cell 22, Eijc, and error factor Eija, Eijb, the Eijc of Eijd switch branch signal source (signal generating system) 10 during with measuring-signal, to reach Eijd inconsistent.Think that then this phenomenon is because for example the secular variation or the fault of switch branch signal source 10 are caused.
Therefore, can based on Xam, Xbm, Xcm, and Xdm whether consistent each other determine to be recorded in error factor Eija, Eijb in the error factor record cell 22, Eijc, and Eijd still be vacation for true.
If the true value Xt of reflection coefficient is known before signal measurement, then also can whether consistent with Xt based on Xam, whether Xbm consistent with Xt, whether Xcm consistent with Xt, and Xdm and Xt whether consistent determine to be recorded in error factor Eija, Eijb, Eijc in the error factor record cell 22, reach Eijd be very or be vacation.More than describe the thought that has provided first embodiment and be applied to switch branch signal source 10.
The difference of second embodiment and first embodiment is to need not to know the true value Xt of reflection coefficient.
Provide very/description of the operation of false determining unit 28 now with reference to the process flow diagram among Figure 25.
Very/reflection coefficient Xam, Xbm that false determining unit 28 is determined to derive, Xcm, and Xdm whether consistent (S280) each other.If Xam, Xbm, Xcm, and Xdm consistent (be "Yes" among the step S280) each other, then true/false determining unit 28 determine to be recorded in error factor Eija, Eijb in the error factor record cell 22, Eijc, and Eijd be very (S281).
If Xam, Xbm, Xcm, and Xdm inconsistent each other (be "No" among the step S280), then true/false determining unit 28 determine to be recorded in error factor Eija, Eijb in the error factor record cell 22, Eijc, and Eijd be vacation (S282).
Under this situation, even Xam, Xbm, Xcm, and Xdm inconsistent each other, but Xam, Xbm, Xcm, and Xdm between difference (being "Yes" among the step S284) in preset range, then true/false determining unit 28 determines that these differences are caused by the secular variation of switch branch signal source 10, and suggestion to error factor Eija, Eijb, Eijc, and Eijd measure (S286).For example, make error factor determine that the display (not shown) of equipment 20 shows that suggestion is to error factor Eija, Eijb, Eijc, and the message (for example, " calibration signal source ") measured of Eijd.
Under this situation, if Xam, Xbm, Xcm, and Xdm inconsistent each other, and Xam, Xbm, Xcm, and Xdm between difference (being "No" among the step S284) not in preset range, then true/false determining unit 28 determines that this difference is caused by the fault of switch branch signal source 10, and so for example report (S288), very/false determining unit 28 causes error factor to determine the display (not shown) display message of equipment 20 (for example, " signal generating system is fault ").
To provide now the amplification factor of determining to be recorded in the amplifier 13 in the amplification factor record cell 25 is true or is the description of definite operation of vacation.
Carry out attached (S20 and the S26) of truing tool 62 as described above, the measurement of R1 and R2 (S22).Then, the power SG of signal is fed to amplification factor derivation unit 23 with the R1 that records.Amplification factor derivation unit 23 is derived as amplification factor: L=R1/SG.Then, amplification factor true/false determining unit 29 based on the amplification factor of record in the amplification factor record cell 25 and amplification factor that amplification factor derivation unit 23 is derived determine the amplification factor that write down for true still for false.
According to second embodiment, can by measure under the state that same calibration instrument 62 wherein is connected to lead-out terminal 19a, 19b, 19c and 19d or be not attached to the R1 of (notconnect state) (supposition lead-out terminal 19a, 19b, 19c have identical reflection coefficient with 19d) under the state of lead-out terminal 19a, 19b, 19c and 19d whatever and R2 determine to be recorded in error factor Eija, Eijb in the error factor record cell 22, Eijc, and Eijd for true still for false.In addition, also can make definite even do not know the true value Xt of the reflection coefficient of lead-out terminal 19a, 19b, 19c and 19d.
In other words, since can determine to be recorded in error factor Eija, Eijb in the error factor record cell 22, Eijc, and Eijd for true still for false, but need not very still to be very easy to so determine error factor Eija, Eijb, Eijc and Eijd for vacation realizing measuring error factor Eija, Eijb, Eijc and Eijd and the further power meter that is connected under three states of open circuit, short circuit and load (standard termination Z0) on lead-out terminal 19a, 19b, 19c and the 19d.
If determining error factor Eija, Eijb, Eijc and Eijd be very, then be recorded in the error factor that error factor Eija, Eijb, Eijc and Eijd in the error factor record cell 22 can be used as switch branch signal source (signal generating system) 10.Owing to need not measuring error factor Eija, Eijb, Eijc and Eijd, can reduce the required work of calibration.
In addition, be false if determine error factor Eija, Eijb, Eijc and Eijd, error factor that then must measuring switch branch signal source (signal generating system) 10.Yet, because the measuring error factor when need not at every turn to measure the circuit parameter of test component, so can reduce the required work of calibration.
The 3rd embodiment
The 3rd embodiment has set embodiment under the situation of a plurality of signal generating units 12 ( signal generating unit 12a and 12b) at the signal generating system 100 according to first embodiment.It should be noted that according to the 3rd embodiment, need not before signal measurement, to know the reflection coefficient of lead-out terminal 19a.
Figure 14 shows the configuration according to the signal generating system 100 of the 3rd embodiment.Signal generating unit 100 comprises switch 11, signal generating unit 12a and 12b, amplifier 13, bridge circuit 14a and 14b, frequency mixer 16a and 16b and lead-out terminal 19a.
In following chapters and sections, same components uses the Reference numeral identical with first embodiment to indicate, and does not do detailed explanation.
A plurality of signal generating unit 12a are identical with signal generating unit 12 with 12b.The output of signal generating unit 12a and 12b is indicated by SG1 and SG2 respectively.
Switch 11 is connected to amplifier 13 with any one among signal generating unit 12a or the 12b.Therefore, be fed to amplifier 13 by the signal of signal generating unit 12a generation or the signal that generates by signal generating unit 12b.
Amplifier 13, bridge circuit 14a and 14b and frequency mixer 16a and 16b and lead-out terminal 19a are identical with among first embodiment those, so omit its description.It should be noted that lead-out terminal 19a be with first embodiment in the same single lead-out terminal.
Figure 15 is the signal flow diagram according to the signal generating system 100 of the 3rd embodiment.
In Figure 15, the output of frequency mixer 16a and 16b is indicated by R1 and R2 respectively.In addition, below relation is set up: R1=SG1 x L1, and as shown in Figure 15 (a).In addition, below relation is set up: R2=SG2 xL2, and as shown in Figure 15 (b).It should be noted that L1 and L2 (S parameter) are the amplification factors of amplifier 13.Because by the frequency difference between the signal of signal generating unit 12a and 12b generation, the amplification factor of amplifier 13 is got different value (L1 and L2) respectively.
With reference to Figure 15, observe and in signal generating system 100, generated error factor E11a, E12a, E21a and E22a (S parameter).
Figure 16 shows the functional block diagram of determining the configuration of equipment 20 according to the error factor of the 3rd embodiment.Error factor determine equipment 20 comprise terminal 21a and 21b, error factor record cell 22, amplification factor derivation unit 23, reflection coefficient derivation unit 24, amplification factor record cell 25, true/false determining unit 28 and amplification factor true/false determining unit 29.
Terminal 21a and 21b and error factor record cell 22 are identical with among first embodiment those, so therefore omit its description.
Amplification factor derivation unit 23 based on when signal just when lead-out terminal 19a exports the measurement result R1 of signal, and the power SG1 of signal and SG2 amplification factor L1 and L2 are derived as L1=R1/SG1, and L2=R1/SG2.It should be noted that the power SG1 of signal and the value of SG2 determine that from error factor the outside of equipment 20 is fed to amplification factor derivation unit 23.In addition, the measurement result R1 of signal is fed to amplification factor derivation unit 23 via terminal 21a.
The amplification factor L1 and the L2 of amplification factor record cell 25 record amplifiers 13.
Amplification factor is true/identical among false determining unit 29 and first embodiment, so omit its description.
Reflection coefficient derivation unit 24 is at signal measurement result R1 and R2 via terminal 21a and 21b received signal under the state of the lead-out terminal 19a of signal generating system 100 output.In addition, reflection coefficient derivation unit 24 reads error factor Eija from error factor record cell 22.In addition, reflection coefficient derivation unit 24 is based on the measurement result R1 of signal and R2 and error factor Eija derive reflection coefficient Xm1 and the Xm2 of lead-out terminal 19a.It should be noted that Xm1 derives (with reference to Figure 17 and 19) when signal generating unit 12a is connected to amplifier 13.In addition, Xm2 derives (with reference to Figure 18 and 19) when signal generating unit 12b is connected to amplifier 13.In other words, reflection coefficient derivation unit 24 derives reflection coefficient Xm1 and the Xm2 of lead-out terminal 19a respectively at signal generating unit 12a and 12b.
Figure 19 (a) and 19 (b) are that the expression error factor determines that equipment 20 is in the signal flow diagram under the state shown in Figure 17 and 18 respectively.
In addition, Figure 17 and 18 shows the example that truing tool 62 wherein is attached to lead-out terminal 19a.Yet, but what does not connect lead-out terminal 19a (notconnect state) yet.Therefore notconnect state more preferably realizes notconnect state than the easier realization of situation that connects truing tool 62.It should be noted that the caused phase change of reflection is zero under notconnect state.Identical among truing tool 62 and first embodiment, therefore the descriptions thereof are omitted.
It should be noted that the state that signal generating unit 12a wherein is connected to the lead-out terminal 19a of amplifier 13 is identical with the state that signal generating unit 12b wherein is connected to the lead-out terminal 19a of amplifier 13.
For example, when signal generating unit 12a was connected to amplifier 13, truing tool 62 was connected to lead-out terminal 19a.In this case, when signal generating unit 12b was connected to amplifier 13, truing tool 62 (or have with the identical reflection coefficient of truing tool 62 truing tool) will be connected to lead-out terminal 19a.
For example, when signal generating unit 12a is connected to amplifier 13, be not attached to lead-out terminal 19a whatever.In this case, when signal generating unit 12b is connected to amplifier 13, be not attached to lead-out terminal 19a whatever.
Very/whether the consistent each other error factor Eija that determines to be recorded in the error factor record cell 22 is true still for false to false determining unit 28 with Xm2 based on the reflection coefficient Xm1 that is derived by reflection coefficient derivation unit 24.
Tool is special, if Xm1 is consistent each other with Xm2, then true/false determining unit 28 determines that error factor Eija is true.Very/and false determining unit 28 is in case to determine error factor Eija be false, with regard to advising error factor Eija measured or the failure of report signal generation systems 100.
For example, even true/false determining unit 28 determines that error factor Eija is false, but the difference between Xm1 and the Xm2 is in preset range, and then true/false determining unit 28 determines that this is because the secular variation of signal generating system 100 causes, and suggestion is measured error factor Eija.
In addition, for example, if true/false determining unit 28 determines that error factor Eija be false, and the difference between Xm1 and the Xm2 surpasses preset range, and then true/false determining unit 28 determines that these are because the fault of signal generating system 100 causes, and so reports.
It should be noted that the consistent each other situation of Xm1 and Xm2 wherein means the situation of Xm1=Xm2.Yet, be false even concern Xm1=Xm2, but the difference between Xm1 and the Xm2 thinks that Xm1 is consistent each other with Xm2 in the scope of being permitted.
Provide the description of the operation of the 3rd embodiment now with reference to the process flow diagram in Figure 26 and 27.Figure 26 shows the process flow diagram of determining the operation of equipment 20 according to the error factor of the 3rd embodiment.Figure 27 shows the process flow diagram of operation of determining true/false determining unit 28 of equipment 20 according to the error factor of the 3rd embodiment.
At first, truing tool 62 is attached to the lead-out terminal 19a (S30) of signal generating system 100.In addition, the frequency mixer 16a of signal generating system 100 is connected to the terminal 21a that error factor is determined equipment 20, and the frequency mixer 16b of signal generating system 100 is connected to the terminal 21b that error factor is determined equipment 20.
In addition, switch 11 is connected to amplifier 13 (S31) with a certain signal generating unit (such as signal generating unit 12a).
Figure 17 shows wherein that truing tool 62 is connected to lead-out terminal 19a, frequency mixer 16a and 16b is connected to the state that terminal 21a and 21b and signal generating unit 12a are connected to amplifier 13 respectively.It should be noted that error factor determine the terminal 21a of equipment 20 and 21b, and reflection coefficient derivation unit 24 outside other assemblies not shown in Figure 17.R1 is the measurement result of signal before generated error factor Eija.R2 is the measurement result of reflected signal.R1 and R2 are the measurement results of signal.
It should be noted that reflected signal is signal (a1) also is calibrated instrument 62 reflections subsequently from lead-out terminal 19a output a consequential signal (b1).In addition, the signal (b1) that is calibrated instrument 62 reflection is fed to bridge circuit 14b via switch 18.The reflected signal that is fed to bridge circuit 14b is fed to frequency mixer 16b, and multiplies each other with local signal.Frequency mixer 16b is output as R2.
In addition, the signal before generated error factor Eija is fed to bridge circuit 14a.The signal that is fed to bridge circuit 14a is fed to frequency mixer 16a, and multiplies each other with local signal.Frequency mixer 16a is output as R1.
Like this, record R1 and R2 (S32).
The output R1 and the R2 that record are fed to reflection coefficient derivation unit 24.
Figure 19 (a) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Figure 17.In Figure 19 (a), following formula (1) is set up.It should be noted that X indicates the load factor of truing tool 62.Following formula (2) obtains by formula (1) is found the solution X.
Reflection coefficient derivation unit 24 composes the measurement result R1 and the R2 of signal to equation (2).In addition, the error factor Eija of reflection coefficient derivation unit 24 reading and recording in error factor record cell 22, and the error factor Eija that reads composed to equation (2).As a result, reflection coefficient derivation unit 24 is derived the load factor of truing tool 62, i.e. the reflection coefficient X (S34) of lead-out terminal 19a.
The reflection coefficient X that derives is Xm1, as mentioned above.
Then, another signal transmitter unit is connected to amplifier 13 (S36), all has been connected to amplifier 13 (being "Yes" among the step S35) until all signal generating unit 12a and 12b.
For example, switch 11 is connected to amplifier 13 with another signal generating unit (such as signal generating unit 12b).
Figure 18 shows wherein that truing tool 62 is connected to lead-out terminal 19a, frequency mixer 16a and 16b is connected to the state that terminal 21a and 21b and signal generating unit 12b are connected to amplifier 13 respectively.It should be noted that error factor determine the terminal 21a of equipment 20 and 21b, and reflection coefficient derivation unit 24 outside other assemblies not shown in Figure 18.R1 is the measurement result of signal before generated error factor Eija.R2 is the measurement result of reflected signal.R1 and R2 are the measurement results of signal.
It should be noted that reflected signal is signal (a1) also is calibrated instrument 62 reflections subsequently from lead-out terminal 19a output a consequential signal (b1).In addition, the signal (b1) that is calibrated instrument 62 reflection is fed to bridge circuit 14b via switch 18.The reflected signal that is fed to bridge circuit 14b is fed to frequency mixer 16b, and multiplies each other with local signal.Frequency mixer 16b is output as R2.
In addition, the signal before generated error factor Eija is fed to bridge circuit 14a.The signal that is fed to bridge circuit 14a is fed to frequency mixer 16a, and multiplies each other with local signal.Frequency mixer 16a is output as R1.
Like this, record R1 and R2 (S32).
The output R1 and the R2 that record are fed to reflection coefficient derivation unit 24.
Figure 19 (b) is that the expression error factor determines that equipment 20 is in the signal flow diagram of state shown in Figure 18.In Figure 19 (b), following formula (1) is set up.It should be noted that X indicates the load factor of truing tool 62.Following formula (2) is resulting by equation (1) being found the solution X.
Reflection coefficient derivation unit 24 composes the measurement result R1 and the R2 of signal to equation (2).In addition, the error factor Eija of reflection coefficient derivation unit 24 reading and recording in error factor record cell 22, and the error factor Eija that reads composed to equation (2).As a result, reflection coefficient derivation unit 24 is derived the load factor of truing tool 62, i.e. the reflection coefficient X (S34) of lead-out terminal 19a.
The reflection coefficient X that derives is Xm2, as mentioned above.
Like this, if all signal generating unit 12a and 12b have been connected to amplifier 13 (being "Yes" in the step 35), then by very/false determining unit 28 is reflection coefficient Xm1 and the Xm2 that derives make comparisons mutually (S38).
The reflection coefficient Xm1 and the Xm2 that it should be noted that derivation are fed to very/false determining unit 28.
The measurement result R1 of signal and R2 obtain at single lead-out terminal 19a.The reflection coefficient Xm1 and the Xm2 that derive are guessed for consistent with the true value Xt of lead-out terminal 19a.Therefore, Xm1 and Xm2 are guessed and are consistent (Xm1=Xm2) each other.
If Xm1 and Xm2 are inconsistent each other, can think that then the error factor Eija that is recorded in the error factor record cell 22 is vacation.In other words, the error factor Eija that is recorded in the error factor record cell 22 is inconsistent with the error factor Eija of signal generating system 100 when measuring-signal.Think that then this phenomenon is because for example the secular variation or the fault of signal generating system 100 are caused.
Therefore, can based on Xm1 and Xm2 whether consistent each other determine to be recorded in error factor Eija in the error factor record cell 22 for true still for false.
If the true value Xt of reflection coefficient is known before signal measurement, then also can be based on Xm1 and Xt whether consistent whether and Xm2 and Xt consistent determines to be recorded in error factor Eija in the error factor record cell 22 for very or be vacation.More than describe the thought provided first embodiment and be applied to signal generating system 100 according to the 3rd embodiment.
The difference of the 3rd embodiment and first embodiment is to need not to know the true value Xt of reflection coefficient.
Provide very/description of the operation of false determining unit 28 now with reference to the process flow diagram among Figure 27.
Very/false determining unit 28 determines the reflection coefficient Xm1 that derive and Xm2 whether consistent (S380) each other.If Xm1 consistent with Xm2 (be "Yes" among the step S380), then to determine to be recorded in the error factor Eija in the error factor record cell 22 be very (S381) to true/false determining unit 28.
If Xm1 not consistent each other with Xm2 (be "No" among the step S380), then to determine to be recorded in the error factor Eija in the error factor record cell 22 be vacation (S382) to true/false determining unit 28.
Under this situation, even Xm1 is not consistent each other with Xm2, but the difference between Xm1 and the Xm2 is (being "Yes" among the step S384) in preset range, then true/false determining unit 28 determines that this difference is caused by the secular variation of signal generating system 100, and suggestion is measured (S386) to error factor Eija.For example, make error factor determine that the display (not shown) of equipment 20 shows the message (for example, " calibrating signal generation systems ") that suggestion is measured error factor Eija.
If Xm1 is not consistent each other with Xm2, and the difference between Xm1 and the Xm2 (being "No" among the step S384) not in preset range, then true/false determining unit 28 is determined signal generating system 100 fault, and so report (S388).For example, true/false determining unit 28 causes error factor to determine the display (not shown) display message of equipment 20 (for example, " signal generating system is fault ").
To provide now the amplification factor of determining to be recorded in the amplifier 13 in the amplification factor record cell 25 is true or is the description of definite operation of vacation.
Implement attached (S30) of truing tool 62, the connection (S31 and S36) of signal generating unit and the measurement (S32) of R1 and R2 as described above.Then, the power SG1 of signal and SG2 and the R1 that records are fed to amplification factor derivation unit 23.Amplification factor derivation unit 23 is derived as L1=R1/SG1 with amplification factor L1, and amplification factor L2 is derived as L2=R1/SG2.Then, amplification factor true/false determining unit 29 based on the amplification factor of record in the amplification factor record cell 25 and amplification factor that amplification factor derivation unit 23 is derived determine the amplification factor that write down for true still for false.
According to the 3rd embodiment, can be when being connected to lead-out terminal 19a at truing tool 62 or being not attached to lead-out terminal 19a (notconnect state) whatever measure R 1 and R2 determine to be recorded in error factor Eija in the error factor record cell 22 for true still for false.In addition, also can make definite even do not know the true value Xt of the reflection coefficient of lead-out terminal 19a.
In other words, because the error factor Eija that can determine to be recorded in the error factor record cell 22 is true still outer false, but need not realizing under three states of open circuit, short circuit and load (standard termination Z0) measuring error factor Eija on the lead-out terminal 19a and be connected power meter, be true still for false very easy so determine error factor Eija.
If determining error factor Eija be very, then be recorded in the error factor that error factor Eija in the error factor record cell 22 can be used as signal generating system 100.Owing to need not measuring error factor Eija, can reduce the required work of calibration.
In addition, be false if determine error factor Eija, error factor that then must measuring-signal generation systems 100.Yet, because the measuring error factor when need not at every turn to measure the circuit parameter of test component, so can reduce the required work of calibration.
To provide error factor now and determine the description of example of the application form of equipment 20.
Figure 20 shows the example of the configuration of output calibration equipment 1 when error factor determines that equipment 20 is used as output calibration equipment 1.
Signal is from the lead-out terminal 19d output according to the switch branch signal source 10 of second embodiment.In addition, the power of signal will be adjusted to a target.In this case, must be under the situation of the influence of considering the 4th port error factor Eijd the gain of resonance-amplifier 13.
The output of output calibration equipment 1 comprises that error factor determines equipment 20 and signal power regulon 30.Error factor determines that the specific descriptions of equipment 20 provide, and error factor determines that equipment 20 reads the 4th port error factor Eijd from error factor record cell 22, and the 4th port error factor Eijd that will read is fed to signal power regulon 30.It should be noted that the 4th port error factor Eijd by very/false determining unit 28 is defined as very.
Signal power regulon 30 determines that based on error factor the 4th port error factor Eijd that equipment 30 is presented comes conditioning signal power.For example, the gain of amplifier 13 comes conditioning signal power to signal power regulon 30 by for example regulating.This adjusting can be with power adjustments to a target from the signal of lead-out terminal 19d output.
It should be noted that and to determine that the first port error factor Eija of equipment 20 is fed to signal power regulon 30 so that will be from error factor from power adjustments to a target of the signal of lead-out terminal 19a output.Signal power regulon 30 determines that based on error factor the first port error factor Eija that equipment 20 is presented comes conditioning signal power.Error factor determines that equipment 20 reads the first port error factor Eija from error factor record cell 22, and the first port error factor Eija that will read is fed to signal power regulon 30.It should be noted that the first port error factor Eija by very/false determining unit 28 is defined as very.
It should be noted that and to determine that the second port error factor Eijb of equipment 20 is fed to signal power regulon 30 so that will be from error factor from power adjustments to a target of the signal of lead-out terminal 19b output.Signal power regulon 30 determines that based on error factor the second port error factor Eijb that equipment 20 is presented comes conditioning signal power.Error factor determines that equipment 20 reads the second port error factor Eijb from error factor record cell 22, and the second port error factor Eijb that will read is fed to signal power regulon 30.It should be noted that the second port error factor Eijb by very/false determining unit 28 is defined as very.
It should be noted that and to determine that the 3rd port error factor Eijc of equipment 20 is fed to signal power regulon 30 so that will be from error factor from power adjustments to a target of the signal of lead-out terminal 19c output.Signal power regulon 30 determines that based on error factor the 3rd port error factor Eijc that equipment 20 is presented comes conditioning signal power.Error factor determines that equipment 20 reads the 3rd port error factor Eijc from error factor record cell 22, and the 3rd port error factor Eijc that will read is fed to signal power regulon 30.It should be noted that the 3rd port error factor Eijc by very/false determining unit 28 is defined as very.
To provide now that wherein replace will be from the description according to the situation of power adjustments to a target of the signal of signal generating system 100 outputs of the first and the 3rd embodiment according to the switch branch signal source 10 of second embodiment.In this case, must be under the situation of the influence of considering the first port error factor Eija gain of resonance-amplifier 13.In this case simultaneously, the configuration of output calibration equipment 1 is same as described above.Signal power regulon 30 determines that based on error factor the first port error factor Eija that equipment 20 is presented comes conditioning signal power.Error factor determines that equipment 20 reads the first port error factor Eija from error factor record cell 22, and the first port error factor Eija that will read is fed to signal power regulon 30.It should be noted that the first port error factor Eija by very/false determining unit 28 is defined as very.
Figure 21 shows the example of the configuration of measurement of reflection-factor equipment 2 when error factor determines that equipment 20 is applied to measurement of reflection-factor equipment 2.
Suppose that test component (DUT) 66 is connected to the lead-out terminal 19 of switch branch signal source 10 to measure the reflection coefficient of DUT 66.Can be based on the reflection coefficient of R1 and R2 acquisition DUT 66.In this case, must under the situation of the influence of considering the 4th port error factor Eijd, obtain reflection coefficient.
Measurement of reflection-factor equipment 2 comprises that error factor determines equipment 20 and measurement of reflection-factor unit 40.Error factor determines that the specific descriptions of equipment 20 provide, and error factor determines that equipment 20 reads the 4th port error factor Eijd from error factor record cell 22 and the 4th port error factor Eijd that will read is fed to measurement of reflection-factor unit 40.It should be noted that the 4th port error factor Eijd by very/false determining unit 28 is defined as very.
The R2 as a result (signal that is produced by the signal that is reflected by DUT is fed to frequency mixer 16b via switch 18 and bridge circuit 14b) of the measurement of the signal that measurement of reflection-factor unit 40 produces based on the R1 as a result of signal measurement before generating the 4th port error factor Eijd, by the signal that is reflected by DUT 66 and error factor determine that the 4th port error factor Eijd that equipment 20 is presented measures the reflection coefficient of DUT 66.
In order to measure the reflection coefficient of the DUT 66 that is connected to lead-out terminal 19a, the first port error factor Eija determines that from error factor equipment 20 is fed to measurement of reflection-factor unit 40.Measurement of reflection-factor unit 40 determines that based on R1 and R2 and error factor the first port error factor Eija that equipment 20 is presented measures the reflection coefficient of DUT 66.Error factor determines that equipment 20 reads the first port error factor Eija from error factor record cell 22, and the first port error factor Eija that will read is fed to measurement of reflection-factor unit 40.It should be noted that the first port error factor Eija by very/false determining unit 28 is defined as very.
In order to measure the reflection coefficient of the DUT 66 that is connected to lead-out terminal 19b, the second port error factor Eijb determines that from error factor equipment 20 is fed to measurement of reflection-factor unit 40.Measurement of reflection-factor unit 40 determines that based on R1 and R2 and error factor the second port error factor Eijb that equipment 20 is presented measures the reflection coefficient of DUT 66.Error factor determines that equipment 20 reads the second port error factor Eijb from error factor record cell 22, and the second port error factor Eijb that will read is fed to measurement of reflection-factor unit 40.It should be noted that the second port error factor Eijb by very/false determining unit 28 is defined as very.
In order to measure the reflection coefficient of the DUT 66 that is connected to lead-out terminal 19c, the 3rd port error factor Eijc determines that from error factor equipment 20 is fed to measurement of reflection-factor unit 40.Measurement of reflection-factor unit 40 determines that based on R1 and R2 and error factor the 3rd port error factor Eijc that equipment 20 is presented measures the reflection coefficient of DUT 66.Error factor determines that equipment 20 reads the 3rd port error factor Eijc from error factor record cell 22, and the 3rd port error factor Eijc that will read is fed to measurement of reflection-factor unit 40.It should be noted that the 3rd port error factor Eijc by very/false determining unit 28 is defined as very.
To provide now and wherein replace test component (DUT) 66 being connected to according to the lead-out terminal 19a of the signal transmitting system 100 of the first and the 3rd embodiment and the description of situation that will measure the reflection coefficient of DUT 66 according to the switch branch signal source 10 of second embodiment.In this case, must under the situation of the influence of considering the first port error factor Eija, obtain reflection coefficient.In this case simultaneously, the configuration of measurement of reflection-factor equipment 2 is same as described above.Measurement of reflection-factor unit 40 determines that based on R1 and R2 and error factor the first port error factor Eija that equipment 20 is presented measures the reflection coefficient of DUT 66.Error factor determines that equipment 20 reads the first port error factor Eija from error factor record cell 22, and the first port error factor Eija that will read is fed to measurement of reflection-factor unit 40.It should be noted that the first port error factor Eija by very/false determining unit 28 is defined as very.
In above embodiment, having provided only has a signal generating system 100 (the first and the 3rd embodiment) or the description of the situation of a switch branch signal source 10 (second embodiment) is only arranged.Yet,, determine that according to the error factor of above embodiment equipment 20 can be connected to each signal generating system 100 and also still can use even there are two or more signal generating systems 100.Yet,, determine that according to the error factor of above embodiment equipment 20 can be connected to each switch branch signal source 10 and also still can use even there are two or more switch branch signal sources 10.
In addition, the foregoing description can be realized with following mode.Computing machine is provided with CPU, hard disk and medium (such as floppy disk (registered trademark) and CD-ROM) reader, and media reader is caused the medium that reading and recording has the program that realizes above-mentioned corresponding assembly (determining equipment 20 such as error factor), thus this program is installed on the hard disk.This method also can realize above-mentioned functions.

Claims (20)

1. an error factor is determined equipment, comprising:
Error factor pen recorder, the error factor in the tracer signal generation systems, described signal generating system comprise the lead-out terminal that is used to generate the signal generating unit of signal and is used to export described signal;
The reflection coefficient derivation device is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal and be recorded in the derive reflection coefficient of described lead-out terminal of described error factor the described error factor pen recorder; And
Very/false determine device, based on described derivation reflection coefficient, and the true value of described reflection coefficient determine the error factor that write down for true still for false.
2. an error factor is determined equipment, comprising:
Error factor pen recorder, the error factor in the tracer signal generation systems, described signal generating system comprise a plurality of lead-out terminals that are used to generate the signal generating unit of signal and are used to export described signal;
The reflection coefficient derivation device is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal and be recorded in derive each reflection coefficient of described a plurality of lead-out terminals of described error factor the described error factor pen recorder; And
Very/false determine device, based on described derivation reflection coefficient whether consistent each other determine the error factor that write down for true still be vacation,
The described measurement result of wherein said signal is to obtain when each reflection coefficient of described a plurality of lead-out terminals is consistent each other.
3. an error factor is determined equipment, comprising:
Error factor pen recorder, the error factor in the tracer signal generation systems, described signal generating system comprise the single lead-out terminal that is used to generate a plurality of signal generating units of signal and is used to export described signal;
The reflection coefficient derivation device is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal and be recorded in the derive reflection coefficient of the respectively corresponding described a plurality of signal generating units of described lead-out terminal of described error factor the described error factor pen recorder; And
Very/and false definite device, whether the consistent error factor of determining to be write down is for very still being vacation each other based on described derivation reflection coefficient.
4. determine equipment as any described error factor in the claim 1 to 3, it is characterized in that the described measurement result of described signal is included in the measurement result of the reflection of the measurement result that generates described signal before the described error factor and described signal.
5. determine equipment as any described error factor in the claim 1 to 3, it is characterized in that:
Described signal records when truing tool is connected to described lead-out terminal; And
Described truing tool realization comprises open-circuit condition, short-circuit condition, standard termination state, reaches the free position of arbitrary load state.
6. determine equipment as any described error factor in the claim 1 to 3, it is characterized in that described signal generating system comprises the amplifier that described signal is amplified, described error factor determines that equipment comprises:
The amplification factor pen recorder writes down the amplification factor of described amplifier;
The amplification factor derivation device is based on the described amplification factor of deriving when the power of the described measurement result of described signal described signal during just from the output of described lead-out terminal and described signal; And
Amplification factor is true/falsely determine device, based on the amplification factor that is write down and described derivation amplification factor determine the amplification factor that write down for true still for false.
7. determine equipment as any described error factor in the claim 1 to 3, it is characterized in that, described true/falsely determine that device still measures or report described signal generating system fault for false result's suggestion to described error factor based on the error factor of determining to be write down for true.
8. error factor as claimed in claim 2 is determined equipment, it is characterized in that:
Described a plurality of lead-out terminal is a same type; And
Described signal records when described a plurality of lead-out terminals are in notconnect state.
9. error factor as claimed in claim 2 is determined equipment, it is characterized in that:
Described signal records when same truing tool is connected to described a plurality of lead-out terminal; And
Described truing tool realization comprises open-circuit condition, short-circuit condition, standard termination state, reaches the free position of arbitrary load state.
10. output calibration equipment comprises:
Determine equipment as any described error factor in the claim 1 to 9; And
The signal power regulating device, based on by described true/falsely determine that device is defined as the power that genuine described error factor is regulated described signal.
11. a measurement of reflection-factor device comprises:
Determine equipment as any described error factor in the claim 1 to 9; And
Measurement of reflection-factor device, when test component is connected to described lead-out terminal based on the measurement result of the reflection of the measurement result of described signal before generating described error factor, described signal, and by described true/falsely determine that device is defined as the reflection coefficient that genuine described error factor is measured test component.
12. an error factor is determined method, comprising:
Error factor recording step, the error factor in the tracer signal generation systems, described signal generating system comprise the lead-out terminal that is used to generate the signal generating unit of signal and is used to export described signal;
Reflection coefficient derivation step is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal, and the derive reflection coefficient of described lead-out terminal of the described error factor that writes down described error factor recording step; And
Very/false determining step, based on described derivation reflection coefficient, and the true value of described reflection coefficient determine the error factor that write down for true still for false.
13. an error factor is determined method, comprising:
Error factor recording step, the error factor in the tracer signal generation systems, described signal generating system comprise a plurality of lead-out terminals that are used to generate the signal generating unit of signal and are used to export described signal;
Reflection coefficient derivation step is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal, and derive each reflection coefficient of described a plurality of lead-out terminals of the described error factor that writes down described error factor recording step; And
Very/false determining step, based on described derivation reflection coefficient whether consistent each other determine the error factor that write down for true still for false,
The described measurement result of wherein said signal is to obtain when each reflection coefficient of described a plurality of lead-out terminals is consistent each other.
14. an error factor is determined method, comprising:
Error factor recording step, the error factor in the tracer signal generation systems, described signal generating system comprise the single lead-out terminal that is used to generate a plurality of signal generating units of signal and is used to export described signal;
Reflection coefficient derivation step is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal, and the derive reflection coefficient of the respectively corresponding described a plurality of signal generating units of described lead-out terminal of the described error factor that writes down described error factor recording step; And
Very/and false determining step, whether the consistent error factor of determining to be write down is for very still being vacation each other based on described derivation reflection coefficient.
15. carry out to implement the instruction repertorie of error factor deterministic process by computing machine for one kind, comprising:
Error factor recording step, the error factor in the tracer signal generation systems, described signal generating system comprise the lead-out terminal that is used to generate the signal generating unit of signal and is used to export described signal;
Reflection coefficient derivation step is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal, and the derive reflection coefficient of described lead-out terminal of the described error factor that writes down described error factor recording step; And
Very/false determining step, based on described derivation reflection coefficient, and the true value of described reflection coefficient determine the error factor that write down for true still for false.
16. carry out to implement the instruction repertorie of error factor deterministic process by computing machine for one kind, comprising:
Error factor recording step, the error factor in the tracer signal generation systems, described signal generating system comprise a plurality of lead-out terminals that are used to generate the signal generating unit of signal and are used to export described signal;
Reflection coefficient derivation step is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal, and derive each reflection coefficient of described a plurality of lead-out terminals of the described error factor that writes down described error factor recording step; And
Very/false determining step, based on described derivation reflection coefficient whether consistent each other determine the error factor that write down for true still for false,
The described measurement result of wherein said signal is to obtain when each reflection coefficient of described a plurality of lead-out terminals is consistent each other.
17. carry out to implement the instruction repertorie of error factor deterministic process by computing machine for one kind, comprising:
Error factor recording step, the error factor in the tracer signal generation systems, described signal generating system comprise the single lead-out terminal that is used to generate a plurality of signal generating units of signal and is used to export described signal;
Reflection coefficient derivation step is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal, and the derive reflection coefficient of the respectively corresponding described a plurality of signal generating units of described lead-out terminal of the described error factor that writes down described error factor recording step; And
Very/and false determining step, whether the consistent error factor of determining to be write down is for very still being vacation each other based on described derivation reflection coefficient.
18. one kind has by the computer-readable medium of computing machine execution with the instruction repertorie of enforcement error factor deterministic process, comprising:
Error factor recording step, the error factor in the tracer signal generation systems, described signal generating system comprise the lead-out terminal that is used to generate the signal generating unit of signal and is used to export described signal;
Reflection coefficient derivation step is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal, and the derive reflection coefficient of described lead-out terminal of the described error factor that writes down described error factor recording step; And
Very/false determining step, based on described derivation reflection coefficient, and the true value of described reflection coefficient determine the error factor that write down for true still for false.
19. one kind has by the computer-readable medium of computing machine execution with the instruction repertorie of enforcement error factor deterministic process, comprising:
Error factor recording step, the error factor in the tracer signal generation systems, described signal generating system comprise a plurality of lead-out terminals that are used to generate the signal generating unit of signal and are used to export described signal;
Reflection coefficient derivation step is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal, and derive each reflection coefficient of described a plurality of lead-out terminals of the described error factor that writes down described error factor recording step; And
Very/false determining step, based on described derivation reflection coefficient whether consistent each other determine the error factor that write down for true still for false,
The described measurement result of wherein said signal is to obtain when each reflection coefficient of described a plurality of lead-out terminals is consistent each other.
20. one kind has by the computer-readable medium of computing machine execution with the instruction repertorie of enforcement error factor deterministic process, comprising:
Error factor recording step, the error factor in the tracer signal generation systems, described signal generating system comprise the single lead-out terminal that is used to generate a plurality of signal generating units of signal and is used to export described signal;
Reflection coefficient derivation step is based on when the measurement result of described signal described signal during just from the output of described lead-out terminal, and the derive reflection coefficient of the respectively corresponding described a plurality of signal generating units of described lead-out terminal of the described error factor that writes down described error factor recording step; And
Very/and false determining step, whether the consistent error factor of determining to be write down is for very still being vacation each other based on described derivation reflection coefficient.
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